# JSON Beautifier & Editor

> Display JSON objects by transforming them into Syntax editable highlighted HTML

Canonical page: [https://chrome-stats.com/d/json-beautifier-editor](https://chrome-stats.com/d/json-beautifier-editor)

## Overview

- **ID:** `json-beautifier-editor`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Joe Ertaba
- **Category:** web-development,other
- **Daily users:** 628
- **Weekly downloads:** 13
- **Rating:** 3.71 / 5 (14 ratings)
- **Version:** 0.6.7
- **Last updated:** 2026-08-26
- **First published:** 2018-07-10
- **Size:** 507 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/json-beautifier-editor/)
- **Website:** [https://webextension.org/listing/json-beautifier.html](https://webextension.org/listing/json-beautifier.html)

## Description

The JSON Beautifier & Editor Chrome extension automatically detects JSON pages and transforms them into a human-readable, syntax-highlighted format. It supports editing, searching, and reorganizing JSON objects with ease. Users can switch between tree, code, and text views, making JSON readability and modification intuitive.

This powerful tool accommodates various JSON mime types, including JSONP formats, and provides both light and dark themes to adapt to your browser's settings. Features include clickable URLs in JSON, collapsible object trees, and persistence of your expanded view on refresh. It also supports beautifying local JSON files and runs efficiently without impacting browser performance.

## Rankings

- #4,341 — Overall
- #10 — json
- #19 — editor
- #25 — css editor
- #29 — text editor
- #92 — transform

## Permissions and access

### Permissions

- `storage`
- `contextMenus`
- `scripting`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users praise the add-on for formatting, sorting, and editing JSON, and for handling large files. However, key drawbacks include no load/save functionality (requiring copy-paste), URL replacement that hampers testing, readability issues, and potential conflicts with Firefox's built-in viewer (with calls for a dark mode).

### Pros

- Formats, sorts and presents JSON nicely, a clear quality-of-life improvement.
- Can open very large JSON files (e.g., 18 MB) that Firefox's internal viewer can't handle.
- Acts as a JSON editor in addition to beautifying, offering editing capabilities.

### Cons

- Cannot load or save JSON directly; editing requires copying data in and out, not a true workflow.
- Replaces the original URL with a moz-extension URL, complicating testing and URL testing workflows.
- Readability issues: text colors are too light, font is small, with no zoom or customization.
- May conflict with Firefox's built-in JSON viewer, sometimes requiring disabling it and lacking a dark mode.

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Source: [Chrome-Stats](https://chrome-stats.com/d/json-beautifier-editor)